Security software program

Completed Posted 6 years ago Paid on delivery
Completed Paid on delivery

I need you to develop some software for me. I would like this software to be developed for Windows . Create a program to encrypt and decrypt binary files using S-DES (Simplified DES) in the Cipher Block Chaining mode. The program takes the input of an initial key and an initial vector, reads the plaintext or ciphertext from a file, conducts the encryption or decryption, and writes the resulting ciphertext or plaintext into a second file. Input Format: The program should take a command in the following format. *(java) mycipher -m mode -k initial_key -i initial_vector -p plaintext_file -c ciphertext_file *mode: can be only encrypt or decrypt *initial_key: 10-bit initial key *initial_vector: 8-bit initial vector *plaintext_file: a binary (not text) file to store the plaintext cipher *text_file: a binary (not text) file to store the ciphertext Output Format: The program should print output in the following format. k1=subkey 1 k2=subkey 2 plaintext=all bytes of the plaintext separated by blanks, starting from the first byte ciphertext= all bytes of the ciphertext separated by blanks, starting from the first byte

C Programming C++ Programming Cryptography Java

Project ID: #15381129

About the project

10 proposals Remote project Active 6 years ago

Awarded to:

$133 USD in 3 days
(9 Reviews)
3.8

10 freelancers are bidding on average $115 for this job

liveexperts123

please ignore the bid amount we will discuss the price later in the chat after we have discussed the project thoroughly Relevant Skills and Experience: . Proposed Milestones: 190 - . Hi remy17! Please drop a message to More

$190 USD in 2 days
(48 Reviews)
6.8
hawkscodeaus

I have 7+ years in software design & development with very good experience. Relevant Skills and Experience I am good in C Programming, C++ Programming, Cryptography, Java Proposed Milestones $200 USD - Cost

$200 USD in 3 days
(3 Reviews)
5.6
sunbrek

You didn't mention C# as a possible solution, but if you are interested, your project can be easily implemented using C#. And if you are worried about cross platform, mono is a great solution. Relevant Skills and Expe More

$100 USD in 2 days
(13 Reviews)
5.8
freelancerkpis

We are happy to bid on this project. ***** We provides dedicate developers and Development and design services as well. ***** We are having a great team of Mobile developers with 7-8 years of expe Relevant Skills a More

$277 USD in 3 days
(5 Reviews)
3.2
michaelgevans

A proposal has not yet been provided

$45 USD in 2 days
(2 Reviews)
2.3
rizwanhamidkhan

Hi, I am intrested in your project and I would like to know more details. Kindly drop a message so we can discuss. I can provide you my work samples as well and that will be a confidence boosting initiative. Good Luck More

$40 USD in 5 days
(0 Reviews)
0.0
junaidmir527

Hi, I am interested in your project and I would like to know more details. Kindly drop a message so we can discuss. Good luck!

$55 USD in 3 days
(0 Reviews)
0.0
bikramkpanda

I have prior experience in developing java application for encryption using RSA logic. So I would be a suitable candidate for your requirement. Relevant Skills and Experience Java core and RSA implementation Proposed More

$55 USD in 5 days
(0 Reviews)
0.0